Botox Masseter Treatment is a non-surgical cosmetic procedure where Botox is injected into the masseter muscles (located at the jawline) to slim the face, reduce jaw tension, and alleviate teeth grinding (bruxism). By relaxing the masseter muscle, this treatment creates a softer, more contoured facial appearance and can also relieve jaw pain. Results typically appear within 1-2 weeks and last 3-6 months.